the faa said planes will have to take off and land more frequently. that would translate to potential longer lines at the airport. joining me is the spokesperson for sfo. can you give me an idea of how many travelers will be out on every given day or? >> what i can tell you, it's about a 10% of reduction. if i'm an air traffic controller, one of my days out of ten is reduced as the furlough. >> reporter: do you have any idea if this will impact the lines? >> i think where we might see some effect is more from the faa perspective. i don't know if it will affect the lines at the airport. but in terms of flight delays, if there's another airport that has congestion issues or staffing issues, even if we're fined locally, we may experience delays to and from the location. it's very much a nationwide issue. >> reporter: it's a juggling act for you. i think one of the things we can expect, there is a procedure we use and that requires an extra controller. not an issue today but if we have bad weather conditions, we might not be able to use that procedure. >>